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The Greek also used underground canals and galleries, hewn out of the rock to lead the water to dry pastures.

And even then water supplies were stocked for meager times.




The aqueduct alongside had a length of 50 km and brought water of the Louros springs to 2 cisterns in the Nymphaeum of Nikopolis. This aqueduct was built after Nikopolis was founded by Octavianus Augustus. It existed of three parts, all differently constructed:
a canal with a water-proof roof and ventilation shafts;
a tunnel hewn out of the Kokkinopelos valley; and
bridges decorated with arches that brought the water over the hills.
Parts of the bridge (pillars near the Louros springs) were renovated between 1978 and 1980.

Another water wonder lay in Samos.
Around 520 bC, Polycrates, the ruler of Samos, commissioned Eupalinos of Megara to construct a tunnel and aqueduct to bring fresh water from a distant natural spring to the harbor city called Samos (now Pythagorion). 

He succeded in opening a water supply channel through a mountain. After considerable planning, work on the tunnel was begun simultaneously at both ends of mount Ambelos.
The tunnel was 1036 m long. The two groups met in the center; they only had an 0,6 m error.